Pump.



No. 838,887. PATENTED DEG. 18, 1906. H. L J. E. NAGEL.

PUMP.

APPLICATION FILED MAY 13.1905.

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PUMP.

Specicaton of Letters Patent.

Fatented Dec. 18, 1906.

Application led May 13,1905. Serial No. 260.276.

To @ZZ rui/1,0m, t Wawy concern.-

Be it known that we, HENRY NAGEL and JOHN E. NAGEL, citizens of theUnited States, and residents of Brunswick, in the county of Antelope andState of Nebraska, have invented a new and Improved Pump, of which thefollowing is a full, clear, and exact description.

Our invention relates to pumps of -that kind in which a vacuum-chamberbelow the piston and a compressed-air chamber above the piston serve toprolong both the iniiow of water into the suction-tube of the pump andthe outflow from the pump-barrel.

Our improvement consists in the novel construction and arrangement ofthe pumpcasing with its pressure and vacuum chambers and the piston andvalves, as hereinafter fully described with reference to the drawings,in which- Figure 1 is a sectional view of our pump shown in a well, andFig. 2 is an enlarged view showing a modification of the pumpbarrel.

ln Fig. 1 of the drawings we have illustrated a well 10, into whichextends a delivery-pipe 11, leading to a pump-casing A, supported in thewell. rlhe pump comprises upper and lower cylinders 12 and 13,respectively, these being of the same diameter and connected by acoupling 14 and having at their outer extremities upper and lower heads15 and 16. Into the center of head 15 is threaded the end of thedelivery-pipe 11, while from the head 16 depends a suctionpipe 17. Thelower cylinder 13 has across its upper extremity a head 18, in which isan opening having depending from it a tubular member 19, forming theworking barrel. ln this barrel operates a piston 20, the rod 21 of whichis shown as extending upwardly through the cylinder 12 and delivery-pipeto a pump-head 22, which may be of any desired form. The piston carriesthe usual upwardly-opening check-valve 23, and at the lower end of themember 19 is a perforated plug 24, furnishing a seat for anupwardlyopening check-valve 25. This last-named check-valve hasdepending from it rods 26, provided with right-angular ends 27, whichextend beyond the edge of the opening through the plug to retain thevalve against upward displacement. Between the cylinder 13 and themember 19, which are concentric with one another, is an annular spaceforming a vacuum-chamber 28. The cylinder 12 has at its upper endbeneath the head 15 a head 29, providedwith an opening in alinement withthat of the head 18 and from which depends a tubular member 30. This isconcentric to the wall of the chamber, and the space between them formsan air-chamber 31. I r

`The water in the well being at its normal level, an upward movement ofthe piston simultaneously draws the air from the chamber 28, producing apartial vacuum, and lifts the water through the suction-pipe. Upon thedownward movement of the piston the check-valve 25 retains within thebarrel what water has entered, while that within the suction-pipe andvacuum-chamber is retained by external pressure. rl`he water passingthrough the check-valve of the piston flows into both the member and theair-chamber 31, compressing the air in the latter. The water that thusaccumulates in the vacuum and air chambers furnishes an auxiliarysupply, which causes a steady flow when the well does not supplysuiiicient water to Ell the barrel to the lifting capacity of thepiston. The harder the suction on the entry-point of the water'thegreater theefhciency of the apparatus, this result being attainedwithout increase in the power applied.

ln the form illustrated in Fig. 2 of the drawings a pump-cylinder 34takes the place of coupling 14 in Fig. 1 and has upper and lower endsections 32 and 33, respectively, of equal diameter connected byscrew-couplings 35 35. The outer extremities of the end sections areclosed by heads 36 36. The intermediate section furnishes the workingbarrel for a piston 37, this having a rod and checkvalve, as has beenpreviously described. From a head 38, at the upper end of the section33, surrounding an opening there, extends a tubular member 38a, havingcoperating with its upper end an upwardly-opening check-valve 39 andforming with the cylinder-seotion a vacuum-chamber 40. The uppersectionhas a head 4 1 similarly provided with a pendent tubular member42, furnishing between it and the section 32 an airchamber 43. In thisinstance the principle of operation is the same as that of the apparatusshown in Fig. 1.

In both forms of our invention there are three alined coaxial cylindersof the same diameter, the cylinders 12 13 and coupling 14 in Fig. 1 andthe cylinders 32, 33, and 34 in IOO IIO

Fig. 2, all detachably connected by screwthreads in such a way as tomake a simple and practical pump of the kind described.

We claim 1. A pump comprising a suction-pipe and delivery-pipe arrangedcoaXially and an intermediate casing between the suction-pipe anddelivery-pipe and of larger diameter than said pipes and consisting. ofupper and lower cylinder-heads and intermediate cylindrical sections,both the u per and lower sec tions being provided witii pendentconcentric tubes forming a compression air-chamber and vacuum-chamber,respectively, a check-valve arranged in the lower section, and a pistonwith upwardly-opening valve arranged to work at an intermediate pointbetween the upper and lower sections and having a piston-rod extendingcentrally up through the delivery-pipe.

2. A pump comprising a pump-head with hand-lever, a delivery-pipeextending from the pump-head down into the well, a suction-pipe and acasing intermediate to the suction and delivery pipe and of largerdiameter than said pipes and consisting of upper and lower cyinder-heads and intermediate cylindrical sections, both the upper andlower cylindrical sections being provided with pendent and concentrictubes forming a compression air-chamber and vacuumchamber res ectively,a check-valve arranged in the ower section and a piston withupwardly-opening valve arranged to work at an intermediate point betweenthe upper and lower sections and having a pistonrod eX- tendingcentrally up through the deliverypipe and pump-head and attached to thehand-lever.

3. A pump comprising a suction-pipe and deliverypipe arranged coaxiallyand an intermediate casing between the suction-pipe and delivery-pipe oflarger diameter than said pipe and consisting of upper and lowercylinder-heads and intermediate cylindrical sections, both the upper andlower sections being provided with pendent and concentric tubes forminga compression air-chamber and vacuum-chamber respectively, the lowerpendent tube being provided with an upwardly-opening valve at its bottomand a piston iitting in said tube and having an upwardly-opening valveand a piston-rod eX- tending up through the delivery-pipe.

In testimony whereof we have signed our names to this specification inthe presence of two subscribing witnesses.

HENRY NAGEL. JOHN E. NAGEL. Vitnesses:

GEORGE FLETCHER, HARRY MELERsoN.

